Successive information
frames transmitted on a customer access links and inter-exchange links are
separated by a single flag.

That P(R)s are transported by RR packets.

Calculation of maximum attainable throughput, D.

values of D were calculated using the formula :-

D= w * fm

--------------------

2(t1+t2) + ( t3+t4)

where w = window size

fm= length of I-frame carrying a full data packet

Calculations of the network loop delay (t3+t4) in table 1 were based on an
estimated network transfer time t3 of 270 ms for an 128 octet data packet in
what is expected to be a maximum length call in the UK packet-switched
network.

For inter-network calls (table 2) the network loop delay was taken as :-

2 * (corresponding value in table 1) + 500 ms.

Values of T3+T4 are listed below:-

Max packet Network Loop Delay (t3+t4) ms

size (octets)

table 1

table 2

128

475

1450

256

560.5

1621

512

731

1964

1024

1072

2644

Note: we cannot guarantee or assure throughput outside the Public Network network

Where I can, I have put links to Amazon for commercial software, not
directly related to the software project, but related to the subject being
discussed, click on the appropriate country flag to get more details of
the software or to buy it from them.